Metals

When a metal is heated up and cooled slowly, this is called...

• Annealing

• Tempering

• Quenching

• Work hardening

An alloy contains

• Only metal atoms

• Metal atoms and atoms of one or more different elements

• Metal and non-metal atoms only

• Only non-metal atoms

An alloy containing atoms of nearly equal size is called a/an

• Interstitial alloy

• Substitutional alloy

• Interesting alloy

• Subliminal alloy

The most reactive metals are the

• Transition metals

• Alkaline earth metals

• Alkali metals

• Lanthanides

An example of a metal that can be found in its pure elemental form on Earth is

• Sodium

• Potassium

• Iron

• Gold

An interstitial alloy contains

• Atoms all of similar size

• Atoms that are very small lying within the lattice of atoms that are much larger

Steel is an alloy containing

• Iron and copper

• Carbon and iron

• Aluminium and iron

• Iron and calcium

Heat treatment alters what in metals?

• The arrangement of crystal grains

• The size of crystal grains

Fast cooling of metals results in

• Larger metal crystals and thus a softer, more malleable metal

• Smaller metal crystals and thus a harder, more brittle metal

• Larger metal crystals and thus a harder, more brittle metal

• Smaller metal crystals and thus a softer, more malleable metal

Brass is an alloy made from

• Copper and zinc

• Silver and copper

• Iron and carbon

• Copper and silver